51207-86-4Relevant articles and documents
Structure-Based Optimization of Quinazolines as Cruzain and TbrCATL Inhibitors
Barbosa Da Silva, Elany,Rocha, Débora A.,Fortes, Isadora S.,Yang, Wenqian,Monti, Ludovica,Siqueira-Neto, Jair L.,Caffrey, Conor R.,McKerrow, James,Andrade, Saulo F.,Ferreira, Rafaela S.
, p. 13054 - 13071 (2021/09/13)
The cysteine proteases, cruzain and TbrCATL (rhodesain), are therapeutic targets for Chagas disease and Human African Trypanosomiasis, respectively. Among the known inhibitors for these proteases, we have described N4-benzyl-N2-phenylquinazoline-2,4-diamine (compound 7 in the original publication, 1a in this study), as a competitive cruzain inhibitor (Ki = 1.4 μM). Here, we describe the synthesis and biological evaluation of 22 analogs of 1a, containing modifications in the quinazoline core, and in the substituents in positions 2 and 4 of this ring. The analogs demonstrate low micromolar inhibition of the target proteases and cidal activity against Trypanosoma cruzi with up to two log selectivity indices in counterscreens with myoblasts. Fourteen compounds were active against Trypanosoma brucei at low to mid micromolar concentrations. During the optimization of 1a, structure-based design and prediction of physicochemical properties were employed to maintain potency against the enzymes while removing colloidal aggregator characteristics observed for some molecules in this series.
Double carbonylation of iodoarenes in the presence of a pyridinium SILP-Pd catalyst
Nagy, Enik?,Nagy, Petra,Papp, Máté,Skoda-F?ldes, Rita,Urbán, Béla
, (2020/04/28)
The efficiency of a palladium catalyst, immobilised on a supported ionic liquid phase (SILP) with adsorbed 1-butyl-4-methylpyridinium chloride, was investigated in aminocarbonylation reactions. Double carbonylation was found to be the main reaction using different iodoarenes and aliphatic amines as substrates. Application of aniline derivatives as nucleophiles led to the exclusive formation of substituted benzamides. The stabilisation effect of the adsorbed pyridinium ionic liquid was compared to that of imidazolium and phosphonium derivatives. It was proved that the pyridinium SILP-palladium catalyst could be reused in at least 10 cycles. Recyclability was tested in five successive runs for all of the substrates.
S-triazine compounds as well as preparation method and application thereof
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, (2020/05/05)
The invention discloses s-triazine compounds and pharmaceutically acceptable salts thereof; experiments prove that the compounds can be used for treating or preventing diseases related to protein kinase activity, such as leukemia and lymphoma, by inhibiti